Flux for soldering aluminum.



UNITED STATES PATENT OFFIOEQg j.

CARL IF. KRI sws, F CLEVELAND, 0310'. ASSIGNOR or 0NE-HAL TO FRANK c. KRIEWS,

0F CLEVELAND, OHIO.

FLUX FOR SOLDEEING ALUMINUM.

1(0 Drawing.

BL. it known that L (Ann l". Kama- 5, a eitizen ot' the United States. resident of tlerelauih eouul'y oftu vahogn. and State ol ()him have invented a nenhnud useful Iuipi'ovelnent in Fluxes for holi'lerlng Aluminum, of \vhieh the following" is a speeilieation, tho prinei'ple of the invention .heing herein explained and the best mode in whit-h l have eonteniplnted applying that pri-ueiple no as to distinguish it from other, inventions.

';\l\' invention relates to means for seeur iuy: solder to aluminum. the ()l)jt.(l'. of the 'ini'ent'iou being to provide a siluplm eeo uoniieal and ellieieut means for neeonipliahiug' the allure named purpose.

The said invention eonsists ol menus hereiunl'ter l'nlly denerihed and pnrtieulnrly set,

l'ortli in the elz'iiuis.

As is well l\'ll()\\'ll to [how skilled III the art at: the prexent time, great dillioulty has been met in devisinga simpleand ('('Ull()ll1leal nu-thod of -wlderixu, nllunimnn. that is. in musing a suitable. solder toln'eonie thoroughly and permanently n'liixed to an aluminum au'fnetn- While xflhltl. has been heretofore. seem-ed to aluminum. it has not, in so Far as I anran'are. been so done as to nndcon :-:trou; mi1nnnent .union. as it has hr-en found that in time the joint is apt to,

break. don"n. I have found. however. that by llI'Hi treatiu i (he aluminum surlare with olive. oil.- the solder' may [)0 readily made to ndln-reto-sueh sllrl'aee. the proeess used l1ein similar to thatz'ol ordinary soldering but".

' Specification 'of Letters Patent. Application filed February 10, 1916.

' Signed by nie, this 8th day'ot February,

Patented Dec; 1.); 1916.,

Serial No. 17.3mm

difl'erin; therefrom as 'a result of the use of olive il as the chief nohloring agent. i

In usingthe; expression mean, of course,to-include the. usual equivaleuts of olive oil iii-the present relation, sueh as linseed. eotton seed nnd other similar oils,.nll bein, gl veerids of one orinorC' fatty neiils. sueh as oleionnd l-inoleic, which are the elmracteristie fatty aeids obtainable from the oils'. It is in this sense that I use the expression glrrerid of a Fatty acid.

In 'earrying out; my improved process, I- lirst: set-ape or otherwise surl'nee -to \rhii'hthe solder is to be applied, then apply ordinary olive oil to sin-l1 surfaee. after 'lli('il I apply an ordinary solder. eouaisting. any. of one-eighth of tin and'sei'en-eiglitlis of lead, by means of n'55 prerioustv healed and 'ordil niny soldering iron, preferalitv heated -to from 4:75 to H, Where ainrge surfaee or seam is to he soldered. I prefer to heat the adjoining sluinees slightly. before the applieation ofin pl'oqem. hut where the surface or seam is small. slltll preh *ating I find to beanmccer'w'nlj'.

[luring thus desrribed my invention, what.

I claim as nen 'and desire to secure by Let- 6E tees l-at'eut, is:

I. tlnx for soldering in; of olive oil.

J. llux for soldering aluminum consisting of a glyeerid of a fatty acid.

aluminum qonsist- It) Hi 7 CARL 1 K RI-EW S.

eleanthe aluminum 50 

